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PCI Meaning & Definition

In most computing contexts, PCI stands for peripheral component interconnect, a standard developed by . Although PCI buses are no longer the standard, at one time they used 47 pins to connect , , and video cards to a computer. They were available in or versions and able to run at of either 33 or 66 . (A 32-bit PCI bus running at 33 MHz would yield a rate of 133 .)

PCI was commonly found in computers manufactured between 1995 and 2005, and many third parties relied on PCI buses to leverage the Plug n Play (PnP) feature of Windows 95 and early Apple Computers. PCI's competitors at the time, and VESA cards, were comparatively much slower and ultimately fell into obsolescence.

PCI was eventually superseded by and (more prevalently) technology. is an adaptation of PCI that's still in use today for some servers and workstations.

PCI is also an abbreviation for the Payment Card Industry. In this context, PCI refers to the development, management, education, and awareness of regulations related to credit and debit cards. The is the governing organization that has published and enforced the since 2006. Members of the PCI SSC include Visa, Mastercard, American Express, Discover, and JCB.










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